<template>
  <div>
    <canvas :id="canvasId"></canvas>
  </div>
</template>

<script>
  import Schart from "schart.js";
  export default {
    name: 'Vue-sChart',
    props: {
      canvasId: {
        type: String,
        default: "",
        required: true
      },
      options: {
        type: Object,
        required: true
      }
    },
    mounted() {
      this.renderChart();
    },
    methods: {
      renderChart() {
        if (!this.checkOptions()) {
          return;
        }
        const opt = { ...this.options };
        new Schart(this.canvasId, opt);
      },
      checkOptions() {
        const opt = this.options;
        if (!opt.datasets || !opt.datasets.length) {
          return false;
        }
        if (!opt.labels || !opt.labels.length) {
          return false;
        }
        return true;
      }
    },
    watch: {
      options: {
        handler(newValue, oldValue) {
          this.renderChart();
        },
        deep: true
      }
    }
  };
</script>
